FORCES ON CHARGED PARTICLES AND AC Flashcards
all materials are made of
atoms
the charge of an electron is
negative
the charge on a proton is
positive
neutrons have
no charge
like charges
repel
different charges
attract
an insulator can become charged by
rubbing
charge can be detected using a
coulomb meter
an area of space where a charged particle experiences a force is known as an
electric field
lines of force are used to show the
strength and direction of an electric field
the closer the field lines ___ the force
stronger
what charge do field lines start on
positive
what charge do field lines end on
negative
current is
the flow of charge per second
what is current measured in
amperes
current is measured using an
ammeter
the relationship that links current, charge and time is
Q=It
An electric charge of 1200 C flows
through an electric heater in 2
minutes. Calculate the current in the heater?
10 A
this type of current flows in one direction only
direct current
this type of current changes a direction a number of times each second
alternating current
the peak voltage of an ac supply is always _____ __ the quoted voltage
greater than
Mains frequency is
50Hz
Mains voltage is
230V